Backupnode downloading image/edits from Namenode at every checkpoint ..

Key: HDFS-2007
URL: https://issues.apache.org/jira/browse/HDFS-2007
Project: Hadoop HDFS
Issue Type: Bug
Components: name-node
Reporter: Hari
Priority: Minor

After the fix for HDFS-903 ( md5 verification of fsimage ) , Backupnode is downloading the image & edit files from namenode everytime since the difference in checkpoint time is always maintined b/w Namenode and Backupnode .

This happens since Namenode is resetting its checkpoint time after every checkpoint since we are ignoring renewCheckpointTime and passing true explicitly to rollFsimage during endcheckpoint , while Backupnode is setting its checkpointtime to whatever it got from the namenode during startcheckpoint()

Thus , checkpointtimes will be different during the next checkpoint and ll cause the image to be downloaded again ..

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grouphdfs-dev @
postedMay 27, '11 at 10:32a
activeDec 20, '11 at 5:13a

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SreeHari (Resolved) (JIRA): 2 posts



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